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When enter the [Auto Gap] option, you will see following message. 
Normally, we use this option to calibrate the sensor sensitivity. 
 
 
 
 
Insert liner between the gap sensors, and press the    button under “V” icon to 
start sensor calibrate. 
 
Note: Please make sure the only liner is placed between the gap see-though type 
sensor. 
 
 
 
 
 
Press the    button under “+” and “-“ icon to increase and decrease 
Stock AD value, and press the    under “V” icon to detect sensor 
sensitivity.  
 
 
 
 
When “SUCCESSFUL” is shown on the LCD display, press the 
 
button under “3” to return to the previous page. 
 
 
 
 
If “FAILED” is shown on the LCD display, please check if only liner is 
placed between the see through type gap sensor.   
 
 
 
 
Please follow the steps below to calibrate sensor sensitivity again. 
1. Press the button   under “3” icon to return to “Gap Sensor” 
menu. 
2. Press the button 
 under “]” icon to enter “Auto Gap” menu. 
Insert liner ... 
Then hit Enter 
             V 
GAP Calibrate 
50 
+     -     V 
Calibrating ... 
Stock AD = 256 
  
SUCCESSFUL 
Stock AD = 50 
 3 
FAILED 
Stock AD = 135 
 3